Grafana config can't generate at ./graphs

[takahyon]

• When I create grafana configuration json with microservices-demo/graphs/Dockerfile,
  I couldn't build and run cause of several reasons like:
• pip are not support python:3.4 anymore

taka@taka-master:~/swimmy-project/microservices-demo/graphs$ sudo docker build -t takahyon/grafanalib .
Sending build context to Docker daemon  34.82kB
Step 1/8 : FROM python:3.4-alpine
3.4-alpine: Pulling from library/python

~~~ ~~~ ellipsis ~~~ ~~~

Step 5/8 : RUN curl https://bootstrap.pypa.io/get-pip.py | python
 ---> Running in e7919ffa6f5d
  % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                 Dload  Upload   Total   Spent    Left  Speed
100 2509k  100 2509k    0     0  19.1M      0 --:--:-- --:--:-- --:--:-- 19.1M
ERROR: This script does not work on Python 3.4 The minimum supported Python version is 3.7. Please use https://bootstrap.pypa.io/pip/3.4/get-pip.py instead.
The command '/bin/sh -c curl https://bootstrap.pypa.io/get-pip.py | python' returned a non-zero cod
FROM python:3.4-alpine

MAINTAINER Container Solutions info@container-solutions.com

after fix this probrem, I can build container with Dockerfile.

-Can't generate grafana config file cause of library:grafanalib has bug at version which selected in Dockerfile

taka@taka-master:~/swimmy-project/microservices-demo/graphs$ sudo docker run --rm -it -v ${PWD}:/opt/code takahyon/grafanalib /bin/sh -c 'ls /opt/code/*.dashboard.py | parallel generate-dashboard -o {.}.json {}'

result

Traceback (most recent call last):
  File "/usr/local/bin/generate-dashboard", line 8, in <module>
    sys.exit(generate_dashboard_script())

~~~ ~~~ ellipsis ~~~ ~~~
  File "/usr/local/lib/python3.7/site-packages/grafanalib/core.py", line 308, in Row
    panels = attr.ib(default=attr.Factory(list), convert=_balance_panels)
TypeError: attrib() got an unexpected keyword argument 'convert'

I really don't know why python interpriter recognized attr.ib as attrib, but any way I fixed this probrem by changing Dockerfile:15
from

# Install grafanalib
RUN pip install git+https://github.com/weaveworks/grafanalib@82556ddfbbd6134837d280a7999d35c45cc3c87e

to

# Install grafanalib
RUN pip install git+https://github.com/weaveworks/grafanalib.git@release

• Describe steps to reproduce the problem
  Everytime use command annouced in graphs/readme.md
  sudo docker build -t {dockerusername}/grafanalib .
sudo docker run --rm -it -v ${PWD}:/opt/code {dockerusername}/grafanalib /bin/sh -c 'ls /opt/code/*.dashboard.py | parallel generate-dashboard -o {.}.json {}'

I will create PR in few minutes, check it out please.

Takamasa